Image marking to permit later identification
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United States of America Patent
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Oct 9, 2001
Issued Date -
N/A
app pub date -
Jan 10, 2001
filing date -
Jul 31, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital image is subtly changed to permit its subsequent identification, without essentially altering its human appearance. The changes affect only a minority of the image pixels. By checking for the presence of such changes in a suspect image, a suspect image can be matched with the original image.
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Cited Art Landscape
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